Organisms

Rickettsia

A genus of gram-negative, aerobic, rod-shaped bacteria often surrounded by a protein microcapsular layer and slime layer. The natural cycle of its organisms generally involves a vertebrate and an invertebrate host. Species of the genus are the etiological agents of human diseases, such as typhus.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A genus of gram-negative, aerobic, rod-shaped bacteria often surrounded by a protein microcapsular layer and slime layer. The natural cycle of its organisms generally involves a vertebrate and an invertebrate host. Species of the genus are the etiological agents of human diseases, such as typhus.

MeSH Record

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MeSH Record

Aspects Covered

15 allowable subheadings

Indexed with the subheadings chemistry, classification, cytology, drug effects, enzymology, genetics, growth & development, immunology, isolation & purification, metabolism, pathogenicity, physiology, radiation effects, ultrastructure, virology.

MeSH Record

Indexing Annotation

classified with bacteria; infection = RICKETTSIA INFECTIONS or their specifics: see notes on species terms for various infections; Rickettsia quintana infection = TRENCH FEVER; RICKETTSIA TSUTSUGAMUSHI see ORIENTIA TSUTSUGAMUSHI is available

MeSH Hierarchy

Tree Number

  1. B03w.660w.050w.783w.875w.650.650w

MeSH Record

NLM Classification

QW 150

AMA Style

References

  1. National Library of Medicine. Rickettsia. Medical Subject Headings (MeSH). 2026. Unique ID D012281. http://id.nlm.nih.gov/mesh/2026/D012281
  2. Rickettsia. In: Wikipedia. https://en.wikipedia.org/wiki/Rickettsia
  3. Rickettsia. In: Wikidata. https://www.wikidata.org/wiki/Q627992